“There will be lots of aliens and Daleks and things like that – or maybe there won't. There are many different things to take into account and we will also have a Christmas special after that and it all connects. Or maybe it doesn't. There’s lots to work out.”So, this also confirms (backed up by the announcement of 13-part fantasy Atlantis being commissioned for Saturday nights this autumn in the family slot) that the episodes this year will be as follows:
Series 7: Part 2 - 30 March
50th Anniversary Special - 23 November
Christmas Special - December
Series 8 will presumably follow in spring 2014 at the earliest.